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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/rtc/rtc-mxc.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/rtc/rtc-mxc.c')
-rw-r--r--ANDROID_3.4.5/drivers/rtc/rtc-mxc.c504
1 files changed, 0 insertions, 504 deletions
diff --git a/ANDROID_3.4.5/drivers/rtc/rtc-mxc.c b/ANDROID_3.4.5/drivers/rtc/rtc-mxc.c
deleted file mode 100644
index e3e50d69..00000000
--- a/ANDROID_3.4.5/drivers/rtc/rtc-mxc.c
+++ /dev/null
@@ -1,504 +0,0 @@
-/*
- * Copyright 2004-2008 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <linux/io.h>
-#include <linux/rtc.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-
-#include <mach/hardware.h>
-
-#define RTC_INPUT_CLK_32768HZ (0x00 << 5)
-#define RTC_INPUT_CLK_32000HZ (0x01 << 5)
-#define RTC_INPUT_CLK_38400HZ (0x02 << 5)
-
-#define RTC_SW_BIT (1 << 0)
-#define RTC_ALM_BIT (1 << 2)
-#define RTC_1HZ_BIT (1 << 4)
-#define RTC_2HZ_BIT (1 << 7)
-#define RTC_SAM0_BIT (1 << 8)
-#define RTC_SAM1_BIT (1 << 9)
-#define RTC_SAM2_BIT (1 << 10)
-#define RTC_SAM3_BIT (1 << 11)
-#define RTC_SAM4_BIT (1 << 12)
-#define RTC_SAM5_BIT (1 << 13)
-#define RTC_SAM6_BIT (1 << 14)
-#define RTC_SAM7_BIT (1 << 15)
-#define PIT_ALL_ON (RTC_2HZ_BIT | RTC_SAM0_BIT | RTC_SAM1_BIT | \
- RTC_SAM2_BIT | RTC_SAM3_BIT | RTC_SAM4_BIT | \
- RTC_SAM5_BIT | RTC_SAM6_BIT | RTC_SAM7_BIT)
-
-#define RTC_ENABLE_BIT (1 << 7)
-
-#define MAX_PIE_NUM 9
-#define MAX_PIE_FREQ 512
-static const u32 PIE_BIT_DEF[MAX_PIE_NUM][2] = {
- { 2, RTC_2HZ_BIT },
- { 4, RTC_SAM0_BIT },
- { 8, RTC_SAM1_BIT },
- { 16, RTC_SAM2_BIT },
- { 32, RTC_SAM3_BIT },
- { 64, RTC_SAM4_BIT },
- { 128, RTC_SAM5_BIT },
- { 256, RTC_SAM6_BIT },
- { MAX_PIE_FREQ, RTC_SAM7_BIT },
-};
-
-#define MXC_RTC_TIME 0
-#define MXC_RTC_ALARM 1
-
-#define RTC_HOURMIN 0x00 /* 32bit rtc hour/min counter reg */
-#define RTC_SECOND 0x04 /* 32bit rtc seconds counter reg */
-#define RTC_ALRM_HM 0x08 /* 32bit rtc alarm hour/min reg */
-#define RTC_ALRM_SEC 0x0C /* 32bit rtc alarm seconds reg */
-#define RTC_RTCCTL 0x10 /* 32bit rtc control reg */
-#define RTC_RTCISR 0x14 /* 32bit rtc interrupt status reg */
-#define RTC_RTCIENR 0x18 /* 32bit rtc interrupt enable reg */
-#define RTC_STPWCH 0x1C /* 32bit rtc stopwatch min reg */
-#define RTC_DAYR 0x20 /* 32bit rtc days counter reg */
-#define RTC_DAYALARM 0x24 /* 32bit rtc day alarm reg */
-#define RTC_TEST1 0x28 /* 32bit rtc test reg 1 */
-#define RTC_TEST2 0x2C /* 32bit rtc test reg 2 */
-#define RTC_TEST3 0x30 /* 32bit rtc test reg 3 */
-
-struct rtc_plat_data {
- struct rtc_device *rtc;
- void __iomem *ioaddr;
- int irq;
- struct clk *clk;
- struct rtc_time g_rtc_alarm;
-};
-
-/*
- * This function is used to obtain the RTC time or the alarm value in
- * second.
- */
-static u32 get_alarm_or_time(struct device *dev, int time_alarm)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
- void __iomem *ioaddr = pdata->ioaddr;
- u32 day = 0, hr = 0, min = 0, sec = 0, hr_min = 0;
-
- switch (time_alarm) {
- case MXC_RTC_TIME:
- day = readw(ioaddr + RTC_DAYR);
- hr_min = readw(ioaddr + RTC_HOURMIN);
- sec = readw(ioaddr + RTC_SECOND);
- break;
- case MXC_RTC_ALARM:
- day = readw(ioaddr + RTC_DAYALARM);
- hr_min = readw(ioaddr + RTC_ALRM_HM) & 0xffff;
- sec = readw(ioaddr + RTC_ALRM_SEC);
- break;
- }
-
- hr = hr_min >> 8;
- min = hr_min & 0xff;
-
- return (((day * 24 + hr) * 60) + min) * 60 + sec;
-}
-
-/*
- * This function sets the RTC alarm value or the time value.
- */
-static void set_alarm_or_time(struct device *dev, int time_alarm, u32 time)
-{
- u32 day, hr, min, sec, temp;
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
- void __iomem *ioaddr = pdata->ioaddr;
-
- day = time / 86400;
- time -= day * 86400;
-
- /* time is within a day now */
- hr = time / 3600;
- time -= hr * 3600;
-
- /* time is within an hour now */
- min = time / 60;
- sec = time - min * 60;
-
- temp = (hr << 8) + min;
-
- switch (time_alarm) {
- case MXC_RTC_TIME:
- writew(day, ioaddr + RTC_DAYR);
- writew(sec, ioaddr + RTC_SECOND);
- writew(temp, ioaddr + RTC_HOURMIN);
- break;
- case MXC_RTC_ALARM:
- writew(day, ioaddr + RTC_DAYALARM);
- writew(sec, ioaddr + RTC_ALRM_SEC);
- writew(temp, ioaddr + RTC_ALRM_HM);
- break;
- }
-}
-
-/*
- * This function updates the RTC alarm registers and then clears all the
- * interrupt status bits.
- */
-static int rtc_update_alarm(struct device *dev, struct rtc_time *alrm)
-{
- struct rtc_time alarm_tm, now_tm;
- unsigned long now, time;
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
- void __iomem *ioaddr = pdata->ioaddr;
-
- now = get_alarm_or_time(dev, MXC_RTC_TIME);
- rtc_time_to_tm(now, &now_tm);
- alarm_tm.tm_year = now_tm.tm_year;
- alarm_tm.tm_mon = now_tm.tm_mon;
- alarm_tm.tm_mday = now_tm.tm_mday;
- alarm_tm.tm_hour = alrm->tm_hour;
- alarm_tm.tm_min = alrm->tm_min;
- alarm_tm.tm_sec = alrm->tm_sec;
- rtc_tm_to_time(&alarm_tm, &time);
-
- /* clear all the interrupt status bits */
- writew(readw(ioaddr + RTC_RTCISR), ioaddr + RTC_RTCISR);
- set_alarm_or_time(dev, MXC_RTC_ALARM, time);
-
- return 0;
-}
-
-static void mxc_rtc_irq_enable(struct device *dev, unsigned int bit,
- unsigned int enabled)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
- void __iomem *ioaddr = pdata->ioaddr;
- u32 reg;
-
- spin_lock_irq(&pdata->rtc->irq_lock);
- reg = readw(ioaddr + RTC_RTCIENR);
-
- if (enabled)
- reg |= bit;
- else
- reg &= ~bit;
-
- writew(reg, ioaddr + RTC_RTCIENR);
- spin_unlock_irq(&pdata->rtc->irq_lock);
-}
-
-/* This function is the RTC interrupt service routine. */
-static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id)
-{
- struct platform_device *pdev = dev_id;
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
- void __iomem *ioaddr = pdata->ioaddr;
- unsigned long flags;
- u32 status;
- u32 events = 0;
-
- spin_lock_irqsave(&pdata->rtc->irq_lock, flags);
- status = readw(ioaddr + RTC_RTCISR) & readw(ioaddr + RTC_RTCIENR);
- /* clear interrupt sources */
- writew(status, ioaddr + RTC_RTCISR);
-
- /* update irq data & counter */
- if (status & RTC_ALM_BIT) {
- events |= (RTC_AF | RTC_IRQF);
- /* RTC alarm should be one-shot */
- mxc_rtc_irq_enable(&pdev->dev, RTC_ALM_BIT, 0);
- }
-
- if (status & RTC_1HZ_BIT)
- events |= (RTC_UF | RTC_IRQF);
-
- if (status & PIT_ALL_ON)
- events |= (RTC_PF | RTC_IRQF);
-
- rtc_update_irq(pdata->rtc, 1, events);
- spin_unlock_irqrestore(&pdata->rtc->irq_lock, flags);
-
- return IRQ_HANDLED;
-}
-
-/*
- * Clear all interrupts and release the IRQ
- */
-static void mxc_rtc_release(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
- void __iomem *ioaddr = pdata->ioaddr;
-
- spin_lock_irq(&pdata->rtc->irq_lock);
-
- /* Disable all rtc interrupts */
- writew(0, ioaddr + RTC_RTCIENR);
-
- /* Clear all interrupt status */
- writew(0xffffffff, ioaddr + RTC_RTCISR);
-
- spin_unlock_irq(&pdata->rtc->irq_lock);
-}
-
-static int mxc_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
-{
- mxc_rtc_irq_enable(dev, RTC_ALM_BIT, enabled);
- return 0;
-}
-
-/*
- * This function reads the current RTC time into tm in Gregorian date.
- */
-static int mxc_rtc_read_time(struct device *dev, struct rtc_time *tm)
-{
- u32 val;
-
- /* Avoid roll-over from reading the different registers */
- do {
- val = get_alarm_or_time(dev, MXC_RTC_TIME);
- } while (val != get_alarm_or_time(dev, MXC_RTC_TIME));
-
- rtc_time_to_tm(val, tm);
-
- return 0;
-}
-
-/*
- * This function sets the internal RTC time based on tm in Gregorian date.
- */
-static int mxc_rtc_set_mmss(struct device *dev, unsigned long time)
-{
- /*
- * TTC_DAYR register is 9-bit in MX1 SoC, save time and day of year only
- */
- if (cpu_is_mx1()) {
- struct rtc_time tm;
-
- rtc_time_to_tm(time, &tm);
- tm.tm_year = 70;
- rtc_tm_to_time(&tm, &time);
- }
-
- /* Avoid roll-over from reading the different registers */
- do {
- set_alarm_or_time(dev, MXC_RTC_TIME, time);
- } while (time != get_alarm_or_time(dev, MXC_RTC_TIME));
-
- return 0;
-}
-
-/*
- * This function reads the current alarm value into the passed in 'alrm'
- * argument. It updates the alrm's pending field value based on the whether
- * an alarm interrupt occurs or not.
- */
-static int mxc_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
- void __iomem *ioaddr = pdata->ioaddr;
-
- rtc_time_to_tm(get_alarm_or_time(dev, MXC_RTC_ALARM), &alrm->time);
- alrm->pending = ((readw(ioaddr + RTC_RTCISR) & RTC_ALM_BIT)) ? 1 : 0;
-
- return 0;
-}
-
-/*
- * This function sets the RTC alarm based on passed in alrm.
- */
-static int mxc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
- int ret;
-
- ret = rtc_update_alarm(dev, &alrm->time);
- if (ret)
- return ret;
-
- memcpy(&pdata->g_rtc_alarm, &alrm->time, sizeof(struct rtc_time));
- mxc_rtc_irq_enable(dev, RTC_ALM_BIT, alrm->enabled);
-
- return 0;
-}
-
-/* RTC layer */
-static struct rtc_class_ops mxc_rtc_ops = {
- .release = mxc_rtc_release,
- .read_time = mxc_rtc_read_time,
- .set_mmss = mxc_rtc_set_mmss,
- .read_alarm = mxc_rtc_read_alarm,
- .set_alarm = mxc_rtc_set_alarm,
- .alarm_irq_enable = mxc_rtc_alarm_irq_enable,
-};
-
-static int __init mxc_rtc_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct rtc_device *rtc;
- struct rtc_plat_data *pdata = NULL;
- u32 reg;
- unsigned long rate;
- int ret;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
-
- if (!devm_request_mem_region(&pdev->dev, res->start,
- resource_size(res), pdev->name))
- return -EBUSY;
-
- pdata->ioaddr = devm_ioremap(&pdev->dev, res->start,
- resource_size(res));
-
- pdata->clk = clk_get(&pdev->dev, "rtc");
- if (IS_ERR(pdata->clk)) {
- dev_err(&pdev->dev, "unable to get clock!\n");
- ret = PTR_ERR(pdata->clk);
- goto exit_free_pdata;
- }
-
- clk_enable(pdata->clk);
- rate = clk_get_rate(pdata->clk);
-
- if (rate == 32768)
- reg = RTC_INPUT_CLK_32768HZ;
- else if (rate == 32000)
- reg = RTC_INPUT_CLK_32000HZ;
- else if (rate == 38400)
- reg = RTC_INPUT_CLK_38400HZ;
- else {
- dev_err(&pdev->dev, "rtc clock is not valid (%lu)\n", rate);
- ret = -EINVAL;
- goto exit_put_clk;
- }
-
- reg |= RTC_ENABLE_BIT;
- writew(reg, (pdata->ioaddr + RTC_RTCCTL));
- if (((readw(pdata->ioaddr + RTC_RTCCTL)) & RTC_ENABLE_BIT) == 0) {
- dev_err(&pdev->dev, "hardware module can't be enabled!\n");
- ret = -EIO;
- goto exit_put_clk;
- }
-
- platform_set_drvdata(pdev, pdata);
-
- /* Configure and enable the RTC */
- pdata->irq = platform_get_irq(pdev, 0);
-
- if (pdata->irq >= 0 &&
- devm_request_irq(&pdev->dev, pdata->irq, mxc_rtc_interrupt,
- IRQF_SHARED, pdev->name, pdev) < 0) {
- dev_warn(&pdev->dev, "interrupt not available.\n");
- pdata->irq = -1;
- }
-
- if (pdata->irq >=0)
- device_init_wakeup(&pdev->dev, 1);
-
- rtc = rtc_device_register(pdev->name, &pdev->dev, &mxc_rtc_ops,
- THIS_MODULE);
- if (IS_ERR(rtc)) {
- ret = PTR_ERR(rtc);
- goto exit_clr_drvdata;
- }
-
- pdata->rtc = rtc;
-
- return 0;
-
-exit_clr_drvdata:
- platform_set_drvdata(pdev, NULL);
-exit_put_clk:
- clk_disable(pdata->clk);
- clk_put(pdata->clk);
-
-exit_free_pdata:
-
- return ret;
-}
-
-static int __exit mxc_rtc_remove(struct platform_device *pdev)
-{
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
-
- rtc_device_unregister(pdata->rtc);
-
- clk_disable(pdata->clk);
- clk_put(pdata->clk);
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int mxc_rtc_suspend(struct device *dev)
-{
- struct rtc_plat_data *pdata = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- enable_irq_wake(pdata->irq);
-
- return 0;
-}
-
-static int mxc_rtc_resume(struct device *dev)
-{
- struct rtc_plat_data *pdata = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- disable_irq_wake(pdata->irq);
-
- return 0;
-}
-
-static struct dev_pm_ops mxc_rtc_pm_ops = {
- .suspend = mxc_rtc_suspend,
- .resume = mxc_rtc_resume,
-};
-#endif
-
-static struct platform_driver mxc_rtc_driver = {
- .driver = {
- .name = "mxc_rtc",
-#ifdef CONFIG_PM
- .pm = &mxc_rtc_pm_ops,
-#endif
- .owner = THIS_MODULE,
- },
- .remove = __exit_p(mxc_rtc_remove),
-};
-
-static int __init mxc_rtc_init(void)
-{
- return platform_driver_probe(&mxc_rtc_driver, mxc_rtc_probe);
-}
-
-static void __exit mxc_rtc_exit(void)
-{
- platform_driver_unregister(&mxc_rtc_driver);
-}
-
-module_init(mxc_rtc_init);
-module_exit(mxc_rtc_exit);
-
-MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
-MODULE_DESCRIPTION("RTC driver for Freescale MXC");
-MODULE_LICENSE("GPL");
-